package day5;

/**
 * @author oldliu
 * @since 1.0
 */
public class CharacterTest {
    public static void main(String[] args) {
        String str="ssdfsdf3w###";
        String s2="";
        char[] cr = str.toCharArray();
        for(char c:cr){
            if(Character.isLetter(c)){
                s2+=c;
            }
        }
        System.out.println(s2);
    }
}
